Accuracy of our age

When a download time starts to tell you that it is 77 hours, 14 minutes and 32 seconds - am I really worried about the 32 seconds? Even the 14 minutes seems a little mis-construed. Frankly you should think a simple message like "around 80 hours" (enough time to fly around the world!).   Or more correctly, "look, this looks silly - but I have guessed initially that this is going to take some time - give me a bit more time to work out what it really could be - and I'll give you a better idea of how much time you have: either learn a new language, learn to juggle, whatever".   This is a perfect time to create an application: "How Long?", "Time on my hands".